'Ezana of Axum was ruler of the Axumite Kingdom (320s – c.360AD) located in present-day Ethiopia

Ethiopia

Ethiopia , officially known as the Federal Democratic Republic of Ethiopia, is a country located in the Horn of Africa. It is the second-most populous nation in Africa, with over 82 million inhabitants, and the tenth-largest by area, occupying 1,100,000 km2...

, Eritrea

Eritrea

Eritrea , officially the State of Eritrea, is a country in the Horn of Africa. Eritrea derives it's name from the Greek word Erethria, meaning 'red land'. The capital is Asmara. It is bordered by Sudan in the west, Ethiopia in the south, and Djibouti in the southeast...

, Yemen

Yemen

The Republic of Yemen , commonly known as Yemen , is a country located in the Middle East, occupying the southwestern to southern end of the Arabian Peninsula. It is bordered by Saudi Arabia to the north, the Red Sea to the west, and Oman to the east....

, he himself employed the style "king of Saba

Sabaeans

The Sabaeans or Sabeans were an ancient people speaking an Old South Arabian language who lived in what is today Yemen, in the south west of the Arabian Peninsula.Some scholars suggest a link between the Sabaeans and the Biblical land of Sheba....

 and Salhen, Himyar

Himyar

The Himyarite Kingdom or Himyar , historically referred to as the Homerite Kingdom by the Greeks and the Romans, was a kingdom in ancient Yemen. Established in 110 BC, it took as its capital the modern day city of Sana'a after the ancient city of Zafar...

 and Dhu-Raydan". Tradition states that Ezana succeeded his father Ella Amida (Ousanas) while still a child and his mother, Sofya served as regent.
Ezana was the first monarch of Axum

Axum

Axum or Aksum is a city in northern Ethiopia which was the original capital of the eponymous kingdom of Axum. Population 56,500 . Axum was a naval and trading power that ruled the region from ca. 400 BC into the 10th century...

 to embrace Christianity

Christianity

Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

, and the first after Zoskales

Zoskales

Zoskales was a king in the Horn of Africa, whose realm is thought to include Axum.The Periplus of the Erythraean Sea mentions him as ruler of the port of Adulis, whose territory extended "from the Moschophagoi ['calf-eaters'] to the rest of Barbaria .....

 to be mentioned by contemporary historians, a situation that led S.